Vacuum cleaner



FIG. 1 is a perspective view showing the vacuum cleaner of my design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is a top plan view thereof.

The dashed broken lines shown therein illustrate portions of the vacuum cleaner that form no part of the claimed design. 

CLAIM The ornamental design for a vacuum cleaner, as shown and described. 